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Questions and Answers
What is the main difference between autogamy and geitonogamy in self-pollination?
What is the main difference between autogamy and geitonogamy in self-pollination?
- In autogamy, pollen is transferred within a single flower, while in geitonogamy, pollen is transferred between different plants.
- In autogamy, self-fertilization occurs, while in geitonogamy, cross-fertilization occurs.
- In autogamy, the stigma and anther are not involved, while in geitonogamy both the stigma and anther are essential.
- In autogamy, pollen is transferred to the stigma of the same flower, while in geitonogamy, pollen is transferred between different flowers on the same plant. (correct)
What are some mechanisms that plants have to ensure autogamy in self-pollination?
What are some mechanisms that plants have to ensure autogamy in self-pollination?
- Insect-attracting scents and nectar production
- Hermaphroditic flowers and wind pollination
- Cleistogamy (flowers that do not open) and stamens that move to contact the stigma (correct)
- Brightly colored flowers and long petals
Why is the term 'selfing' not limited to self-pollination?
Why is the term 'selfing' not limited to self-pollination?
- Selfing is a term used only in gymnosperms, not in flowering plants.
- Selfing includes cross-fertilization between different species.
- Selfing includes only autogamy, not geitonogamy.
- Selfing refers to self-fertilization, which can involve other methods beyond self-pollination. (correct)
